For the Inventor, By the Inventor

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Chatsworth, CA, United States of America

Exhart Environmental Systems, Inc.

USPTO Granted Patents = 141

Trademarks = 20

Forward Citations = 1,521

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16 inventors (with patents filed for the assignee):

Margaret Weiser (133 out of 143 patents)

Isaac Weiser (46 out of 53 patents)

Shari Weiser (18 out of 18 patents)

4. Michael Weiser (9 out of 9 patents)

5. Todd Warner (4 out of 8 patents)

6. Albert M Williams (3 out of 3 patents)

7. Jin-Mao Huang (3 out of 3 patents)

8. Xiao-Hong Guo (3 out of 3 patents)

9. Yong-Biao Ye (3 out of 3 patents)

10. Ye Yong Biao (2 out of 2 patents)

11. Lin R Xin (2 out of 2 patents)

12. Charles Vanetzian (1 out of 1 patent)

13. Charles Vanetian (1 out of 1 patent)

14. Ye Yong-Biao (1 out of 1 patent)

15. Guo Xiao-Hong (1 out of 1 patent)

Core Competencies:

Novelty Designs

Pest Repellers

Decorative Lighting

Wind Catchers

Garden Accessories

Battery Powered Lights

Ultrasonic Technology

Whimsical Spinners

LED Lighting

Animal Repellents

Garden Stake

Solar Lighting

141 patents: Sort by Forward Citations

1. D947069 - Angel novelty (2022-03-29),

2. D947067 - Cross novelty (2022-03-29),

3. D931136 - Circular-framed wind catcher (2021-09-21),

4. D915543 - Rodent repellant device (2021-04-06),

5. D881748 - Butterfly novelty having perforated wings (2020-04-21),

6. D786734 - Flamingo novelty (2017-05-16),

7. D783876 - Football marquee light (2017-04-11),

8. D778776 - Rooster novelty (2017-02-14),

9. D778775 - Songbird novelty (2017-02-14),

10. D778774 - Dragonfly novelty (2017-02-14),

11. D778773 - Hummingbird novelty (2017-02-14),

12. D778772 - Songbird novelty with tufted head feathers (2017-02-14),

13. D774233 - Football helmet marquee light (2016-12-13),

14. 8491149 - Battery powered decorative light with timer (2013-07-23),

15. 8201972 - LED molded tree branches with blossoms (2012-06-19),

Exhart Environmental Systems, Inc. is a leading provider of innovative environmental solutions. With a rich history of over 30 years, Exhart offers a wide range of products and services designed to promote sustainability and enhance the natural environment. Our team of experts specializes in the development and implementation of advanced systems for water treatment, air quality management, waste management, and renewable energy solutions. We pride ourselves on delivering cost-effective and efficient solutions that help organizations meet their environmental goals. Visit our website to explore our products and learn more about our commitment to a greener future.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

141 Patents

#2 in Chatsworth, CA

#621 in California

#2,672 in US

#5,600 in the World

Chatsworth, CA, United States of America

Exhart Environmental Systems, Inc.

Forward Citations = 1,521

16 inventors:

Margaret Weiser (133 out of 143 patents)

Isaac Weiser (46 out of 53 patents)

Shari Weiser (18 out of 18 patents)

4. Michael Weiser (9 out of 9 patents)

5. Todd Warner (4 out of 8 patents)

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